Shearing machine



May 19, l942-l H. c. slMoNsx-:N 2,283,824

' SHEARING MACHINE Filed Sept.' 26, 1940 Patented May 19, 1942 orrlce SHEARING MaoinNE Harold -C. Simonsen, Monroe, Utah, assignor ll" one-halfto Albert A. Evans, Monroe, Utah 2 Claims.

means for applying pressure to the teeth directly for providing the proper tension thereon.

Still another aim of the invention is to provide a device of simple construction including a universally mounted arm oscillated by means of a driven cam member for reciprocating the movable cutter and provided with meansfor urging one end of the arm downwardly and into engagement with the teeth of the movable cutter for holding the movable cutter in Yposition on a stationary cutter bar or comb.

Other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, which illustrates a preferred embodiment thereof, and

wherein:

Figure l is a longitudinal, substantially central vertical sectional view, partly in elevation, of the shearing machine,

Figure 2 is-a fragmentary top plan view of the;

Figure 4 is an enlarged sectional view taken substantially along the plane of the line 4`4 of Figure 1. I

Referring more particularly to the drawing,

wherein like reference characters designate like or corresponding parts throughout the different.v

views, Il! designates generally the sheep sh-earing machine including a housing II which is provided with a bore or recess I2 which extends longitudinally therethrough and in the rear end of which is mounted at bushing I3 by means of the threaded connection I4. A cam shaft I5 is journaled in the bushing I3 and is provided with a restricted threaded end I6, disposed exteriorly of the bushing I3 and which is adapted to be connected to a driven shaft, not shown, preferably of the flexible type.

The housing II is provided with a downwardly offset flared forward end I1 which extends beyond the forward end of the bore I2 and which is provided with a substantially flat under side against which is disposed a stationary toothed cutter or lcomb I8 the base portion of which is provided with slots I3 which open outwardly of the back edge thereof. Th-e portion I'I is provided with threaded openings 20 to receive the headed screws ZI which extend through the slots IS for securing the cutter bar I8 to the under side of the portion Il. It will be obvious that by loosening the screws 2| the cutter bar I8 may be projected or retracted relatively to the portion I'I and secured thereto in any one o f a plurality of adjusted positions. The stationary cutter bar or comb I8 is provided with a plurality of forwardly projecting tapered teeth 22 the upper sides of the opposite ends of each of which are sharpened for a purpose which will hereinafter become apparent.

Housing II is provided with a threaded opening 23 in its under side which opens into the bore I2 adjacent the forward end thereof and in which is mounted a screw 23 which is provided with a lock nut 25 on its lower end for engaging the under side of the housing II for retaining the bolt 24 in adjusted positions relatively to the bore I2. The bolt 24 is provided at its upper end with a restricted shank 26 on which is rotatably and removably mounted a ball shaped member 2T. An arm 28 is partially disposed within the forward portion of the bore I2 and is provided intermediate of its ends with an opening 29 to receive an insert 30 having a downwardly opening socket in which is mounted the ball shaped Vmember 2T to universally mount the arm 28 to permit it to swing either horizontally or vertically. The arm 28 at its inner end is provided with an upwardly enlarged portion 3l which is vprovided with an outwardly or rearwardly opening recess or slot 32 which extends from the top to the bottom thereof and which is arcuately shaped in cross section, as best seen in Figure 3. A crank 33 is secured to the inner end of the shaft I5 and is provided at its free end with an outwardly projecting stub shaft 34 on which is rotatably mounted a ball shaped Amember '35 which is disposed in the slot or recess 32 and which is slidably mounted therein to oscillate the arm 28 when the shaft I5 is revolved.

The arm 28 is provided with an opposite, forward end which projects from the forward end of the bore I2 and which diverges from adjacent the insert 30. The forward end 36 is provided with a pair of spaced outwardly opening threaded recesses 31 to receive the threaded shanks 38 of a pair of lingers 39 which are thereby removfrom its end 35 in diverging relationship relatively to one another. The iingers 39, at their free ends, are provided with downwardly projecting tapered studs 40.

A reciprocating cutter bar 4I is loosely mounted on the stationary cutter bar I8 and is provided at each end thereof with a forwardly extending tapered tooth 42 the side edges of which teeth are sharpened to cooperate with the sharpened edges of the teeth 22 to form clippers, as will hereinafter become apparent. As best seen in Figure 2, the sharpened side edges of the teeth 42 are obliquely disposed relatively to the sharpened edges of the teeth 22 so that when the cutter bar 4I is reciprocated over the cutter bar I8 the teeth 22 and 42 will combine to produce a shearing out. As best seen in Figure 1, the cutter 4I is provided with a downwardly projecting marginal flange 43 the lower edge of which forms a bearing surface for slidably engaging the upper side of the cutter bar I8. The teeth 42 are each provided with an opening 44, as best seen in Figures 1 and 4, to receive a stud 40 so that each of the fingers 39 rests on and is connected to a tooth 42.

The housing II is provided with an upwardly and rearwardly inclined passage or opening 45 adjacent its forward end in which is mounted the lower end of a sl-eeve 4S, the upper end of which is externally threaded to receive the open, threaded end of a socket 41. vided with an insert 48 in its opposite, upper end. The arm 28, forwardly of the insert 30, is provided with an opening 49 to receive the shank portion 50 of an upwardly and rearwardly opening socket I. A rod 52 is provided with a restricted lower end on which is formed a ball 53 which is loosely mounted in the socket 5I and is provided 'at its opposite, upper end with an enlarged upwardly opening socket 54 to receive a ball 54 which is disposed in the socket 4'I and forms a part of the insert 48. The rod 52 extends through the sleeve 46 and functions to urge end 36 and the arm 28 downwardly to hold the fingers 39 in engagement with the cutter bar 4I. The sockets 5I and 54 open upwardly and are adapted to hold a lubricant in which balls 53 and 54 work to prevent the parts from heating.

From the foregoing it will be obvious that when the shaft I5 is revolved the crank 33 will be revolved for oscillating the arm 28 to thereby oscillate the cutter bar 4I relatively to the comb or cutter bar I8 to cause the teeth 42 to move over the teeth 22 to produce a shearing cut. By screwing down on the cap 4l the pressure of the lingers 39 on the teeth 42 can be increased to cause them to press down suiciently on the teeth 22 to produce a proper cutting operation, or if necessary, the cap 4l can be turned in the opposite direction for diminishing the pressure on the teeth 42. It will be noted that the fingers 39 bear directly on the teeth 42 so that the -frictional engagement between the cutters I8 and 4I Socket 41 is prowill be at the point where the teeth 42 and 22 contact for accomplishing the best results in the cutting operation. The comb or cutter bar I8 may be projected or retracted relatively to the portion I1, as previously explained, for adjustably positioning its teeth 22 relatively to the teeth 42. By unscrewing cap 4I end 36 of arm 28 may be raised to release the cutter 4I which can then be lifted off of the bar I8 for replacement or sharpening due to the fact that the ball and socket connection 2'I, 3D permits the arm 28 to be swung horizontally or vertically.

Various modications and changes are contemplated and may obviously be resorted to as only a preferred embodiment of the invention has been disclosed.

I claim as my invention:

1. A cutter comprising a housing, a stationary cutter blade detachably and adjustably connected to said housing and projecting from one end thereof, an arm swingably mounted intermediate of its ends in said housing, driven cam means for oscillating said arm, a reciprocating cutter loosely mounted on said stationary cutter bar, one end of said arm extending from the housing, lingers detachably mounted in said end of the arm and provided with depending studs for engaging said reciprocating cutter, a rod having a ball shaped end, a socket in said arm adjacent the aforementioned end thereof for receiving the ball shaped end of the rod, an upwardly opening socket on the opposite end of the rod, an adjustable socket, forming a part of said housing for receiving the last mentioned end of the rod, and an insert in said adjustable socket provided with a ball shaped portion for engaging the socket end of the rod for holding the fingers in engagement with the reciprocating cutter.

2. An animal shears of the type provided with a housing having a fixed cutter and a movable cutter disposed on the fixed cutter, an arm universally mounted intermediate of its ends in the housing and connected at one end to cam means for oscillating the arm and connected at its opposite end to said movable cutter in a manner to bear thereon; comprising a sleeve disposed in the upper part of the housing and opening inwardly and outwardly thereof, said sleeve having an upper exposed and externally threaded end, an internally threaded cap adjustably connected to the threaded end of the sleeve, said cap having a ball element projecting inwardly and downwardly from its upper, closed end, said arm having an upwardly opening socket adjacent its last mentioned end, and a rod having a ballshaped end for engaging said socket, the opposite upper end of the rod being provided with an upwardly opening socket portion for engaging said ball element, said rod and ball and socket connections combining with the adjustable cap to adjustably hold the last mentioned end of the arm in engagement with the movable cutter.

HAROLD C. SIMONSEN. 

